Figure 5. Cycling performance of alkaline Fe/S RFBs with different anodes. (A and B) EE and VE vs. cycle number for cells with 0.1 M [Fe(CN)6]4- catholyte. (C and D) Cycling data for cells with 0.8 M [Fe(CN)6]4- catholyte. (E) Capacity-controlled short-cycle tests of the CuS-WA/CF cell at 50% SOC.